LAUSR

• The authors have abbreviated liver hydatid cysts as LHD in the abstract section. However, in the introduction section, authors have abbreviated liver hydatid disease as LHD. In our opinion these two conditions are completely different because hydatid cysts are caused by E. granulosus and liver hydatid disease can be caused either by E. granulosus or E. alveolaris. • The authors state that they have diagnosed the cystobiliary fistula using abdominal ultrasonography in patients without surgical drain or catheter. It is common that fluid accumulations are present in the early postoperative period in cystic cavity in patients who underwent conservative surgery and ultrasonography cannot differentiate between bile accumulations from other fluid accumulations. According to our experience about liver hydatid disease, therefore, magnetic resonance cholangiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography (ERCP) are the gold standard diagnostic tests. • As it is known very well, if the study group consists of 50 or more patients, the normal distribution of the continuous data is evaluated using the Kolmogorov–Smirnov test. In the present study, the authors do not need to use the Shapiro–Wilk test. • The authors have stated in the abstract section that distribution of the cysts were in right lobe in 80 patients, in left lobe in 13 patients and bilobar in 4 patients. However, in the results section and Table 1, locations of the cysts were stated as right lobe in 66 patients, left lobe in 14 patients, and bilobar in 13 patients. Therefore, the authors should point out the correct results and should correct the text accordingly. • The authors have stated the number of cysts in mean ± SD. We believe this type of data evaluation is not correct for data such as thrombocyte numbers, gender, and number of cysts cannot be expressed in decimal numbers. We cannot state that the patient has 1.4 or 1.6 cysts; therefore, the authors should give number and percentage of the study population. • In the sixth row of Table 1, the development of fistula was evaluated among the two groups, but the results of the statistical analysis were not given. We evaluated the data using Chi-square test with SPSS software and found p = 0.162. In other terms, the fistula rates were 8/39 patients in surgical treatment and 6/58 patients in the percutaneous groups, respectively, and did not reach statistical significance level. When the analysis was made considering the total number of hydatid cysts, it was seen that no statistically significant difference was found between the surgical (n = 12/63 cyst; 19%) and percutaneous (n = 13/81 cyst; 16%) groups in terms of postoperative biliary fistula (p = 0.66). However, our new statistical analysis showed that p value was 0.637. • The authors performed ROC analysis to determine the cut-off value of 69 mm as the limit for the risk of development of cystobiliary fistula and have performed Chisquare test to evaluate the relationship between diameter This comment refers to the article available online at https ://doi. org/10.1007/s0038 3-020-04637 -9.